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  • Measurement of the inelastic $pp$ cross-section at a centre-of-mass energy of $\sqrt{s}=7$ TeV
    Andreotti, M; Baesso, C; Barlow, R. J; Barsuk, S; Belogurov, S; Bien, A; Blusk, S; Bondar, N; Bowcock, T. J. V; Brett, D; Brook, N. H; Charpentier, Ph; Closier, J; Coco, V; Cogneras, E; Collazuol, G; Contu, A; De Bruyn, K; De Silva, W; Dijkstra, H; Dorigo, M; Dujany, G; Dziurda, A; Dzyuba, A; Eitschberger, U; Ferro-Luzzi, M; Fol, P; Gandelman, M; Garrido, L; Gascon, D; Gaspar, C; Geraci, A; Ghez, Ph; Gibson, V; Golubkov, D; Gotti, C; Cardoso, L. A. Granado; Grünberg, O; Gys, T; Hamilton, B; He, J; Hicheur, A; Hoballah, M; Hulsbergen, W; Hussain, N; Jalocha, J; Joram, C; Kenyon, I. R; Lacarrere, D; Lafferty, G; Langhans, B; Lees, J. -P; Lohn, S; Machikhiliyan, I. V; Maev, O; Mapelli, A; Matev, R; Meissner, M; Mordà, A; Neufeld, N; Niess, V; Nikodem, T; Otto, A; Oyanguren, A; Papanestis, A; Pearce, A; Penso, G; Pescatore, L; Poluektov, A; Popov, A; Prouve, C; Raniuk, I; Reis, A. C. dos; Ricciardi, S; Rinnert, K; Satta, A; Saunders, D. M; Schiller, M; Seyfert, P; Shapkin, M; Shires, A; Smith, N. A; Spaan, B; Storaci, B; Swientek, S; Tellarini, G; Thomas, C; Tresch, M; Vallier, A; Vieira, D; Voß, C; Wandernoth, S; Whitehead, M; Wilschut, H. W; Wyllie, K; Xu, Z; Yushchenko, O; Zangoli, M; Zhang, Y; Zhokhov, A

    12/2014
    Journal Article

    JHEP 1502 (2015) 129 The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum $p_{\rm T}>0.2$ GeV/$c$ in the pseudorapidity range $2.0<\eta<4.5$, is measured by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The cross-section in this kinematic range is determined to be $\sigma_{\rm inel}^{\rm acc} = 55.0 \pm 2.4$ mb within the spectrometer acceptance with an experimental uncertainty that is dominated by systematic contributions. Extrapolation to the full phase space, using PYTHIA 6, yields $\sigma_{\rm inel} = 66.9 \pm 2.9 \pm 4.4$ mb, where the first uncertainty is experimental and the second is due to the extrapolation.

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